A pound is equivalent to 454 grams, and that is true regardless of what you are measuring. Yttrium is weighed the same way as any other substance.
[1 Pound = 453.59237 grams and 1 gram = 0.00220462262 pounds]
About 453.6 grams in one pound.
453.59237 grams = 1 pound.
1 pound = 453.59 grams
1 pound = 453.59237 grams
About 453.6 grams per pound.
About 453.6 grams per pound.
Approximately 453.6 grams per pound.
There are 453.592 grams in one pound.
About 453.6 grams equals 1 pound.
About 453.6 grams.
There are about 453.6 grams in one pound.
453.5 grams is 1 pound